/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.flink.table.api;

import org.apache.flink.annotation.PublicEvolving;
import org.apache.flink.table.expressions.ApiExpressionUtils;
import org.apache.flink.table.expressions.Expression;

/** Session window on time with alias. Fully specifies a window. */
@PublicEvolving
public final class SessionWithGapOnTimeWithAlias extends GroupWindow {

    private final Expression gap;

    SessionWithGapOnTimeWithAlias(Expression alias, Expression timeField, Expression gap) {
        super(alias, timeField);
        this.gap = ApiExpressionUtils.unwrapFromApi(gap);
    }

    public Expression getGap() {
        return gap;
    }
}
